Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
Capillary tubes of length l and 2l are connected in series, their radii are r and 2r respectively. If stream line flow is maintained and pressure difference across first and second capillary tubes are P1 and P2 respectively then find the ratio P1/P2.
12
Oct
Capillary tubes of length l and 2l are connected in series, their radii are r and 2r respectively. If stream line flow is maintained and pressure difference across first and second capillary tubes are P1 and P2 respectively then find the ratio P1/P2. Capillary tubes of length l and 2l are connected in series their [...]
A substance breaks down under a stress of 10^5 Pa. If the density of the wire is 2 × 10^3 kg/m^3, find the minimum length of the wire which will break under its own weight (g = 10 m/s^2).
12
Oct
A substance breaks down under a stress of 10^5 Pa. If the density of the wire is 2 × 10^3 kg/m^3, find the minimum length of the wire which will break under its own weight (g = 10 m/s^2). A substance breaks down under a stress of 10^5 Pa. If the density of the wire [...]
n drops of water , each of radius 2 mm, fall through aiir at a terminal velocity of 8 cm/s. If they coalesce to form a single drop, then the terminal velocity of the combined drop is 32 cm/s. Find n.
12
Oct
n drops of water , each of radius 2 mm, fall through aiir at a terminal velocity of 8 cm/s. If they coalesce to form a single drop, then the terminal velocity of the combined drop is 32 cm/s. Find n. each of radius 2 mm fall through aiir at a terminal velocity of 8 [...]
The diameter of a gas bubble formed at the bottom of a pond is d = 4 cm. When the bubble rises to the surface , its height is ( tension of water = T = 0.07 N/m.)
12
Oct
The diameter of a gas bubble formed at the bottom of a pond is d = 4 cm. When the bubble rises to the surface , its height is ( tension of water = T = 0.07 N/m.) its height is ( tension of water = T = 0.07 N/m.) The diameter of a gas [...]
A thin plate AB of large area A is placed symmetrically in a small gap of height h filled with water of viscosity η 0 and the plate has a constant velocity v by applying a force F as shown in the figure. If the gap is filled with some other liquid of viscosity 0.75η 0 , at what minimum distance (in cm) from top wall should the plate be placed in the gap, so that the plate can again be pulled at the same constant velocity V, by applying the same force F? (Take h = 20 cm).
12
Oct
A thin plate AB of large area A is placed symmetrically in a small gap of height h filled with water of viscosity η 0 and the plate has a constant velocity v by applying a force F as shown in the figure. If the gap is filled with some other liquid of viscosity [...]
A cube of side a and mass m just floats on the surface of water as shown in the figure. The surface tension and density of water are T and ρ w , respectively. If angle of contact between cube and water surface is zero, find the distance h (in metres) between the lower face of cube and surface of the water. (Take m =1 kg, g = 10 m/s 2 ,aT = 4 10 unit and ρ w a 2 g = 10 unit).
12
Oct
A cube of side a and mass m just floats on the surface of water as shown in the figure. The surface tension and density of water are T and ρ w , respectively. If angle of contact between cube and water surface is zero, find the distance h (in metres) between the lower [...]
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A cube of side a and mass m just floats on the surface of water as shown in the figure. The surface tension and density of water are T and ρ w ,
aT = 4 10 unit and ρ w a 2 g = 10 unit). ,
find the distance h (in metres) between the lower face of cube and surface of the water. (Take m =1 kg ,
g = 10 m/s 2 ,
respectively. If angle of contact between cube and water surface is zero ,
Column II depends on physical quantity /physical law given in Column I. Match the following columns and select the correct option from the codes given below.
12
Oct
Column II depends on physical quantity /physical law given in Column I. Match the following columns and select the correct option from the codes given below. Column II depends on physical quantity /physical law given in Column I. Match the following columns and select the correct option from the codes given below. October 12, 2020 [...]
A glass plate of length 10 cm, breadth 4 cm, and the thickness 0.4 cm , weighs 20 g in air. It is held vertically with long side horizontal and half the plate immersed in water. What will be its apparent weight? Surface tension of water = 70 dyne/cm.
12
Oct
A glass plate of length 10 cm, breadth 4 cm, and the thickness 0.4 cm , weighs 20 g in air. It is held vertically with long side horizontal and half the plate immersed in water. What will be its apparent weight? Surface tension of water = 70 dyne/cm. A glass plate of length 10 [...]
A water drop and a mercury drop is taken inside identical horizontal conical pipes. Then
12
Oct
A water drop and a mercury drop is taken inside identical horizontal conical pipes. Then A water drop and a mercury drop is taken inside identical horizontal conical pipes. Then October 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The velocity of liquid (v) in steady flow at a location through cylindrical pipe is given by v = v0 ( 1− r2/R2 ), where r is the radial distance of that location from the axis of the pipe and R is the inner radius of pipe. If R = 10 cm. volume rate of flow through the pipe is π/2 × 10^−2 m^3/s and the coefficient of viscosity of the liquid is 0.75 N/m^2
12
Oct
The velocity of liquid (v) in steady flow at a location through cylindrical pipe is given by v = v0 ( 1− r2/R2 ), where r is the radial distance of that location from the axis of the pipe and R is the inner radius of pipe. If R = 10 cm. volume rate of [...]